Missing precompiled demo zip files for the 5.4 version
When looking at the page: https://doc.cgal.org/latest/Manual/packages.html we see:

but we get a 404 Not Found message. This accounts for all the zip files of the 5.4 version.
Same accounts for the master version but this is understandable as this is still "under construction"
I have added redirections so that the links work for both 5.4 and 5.5 (master).
Looks reasonable, though:
- https://www.cgal.org/demo/5.4/triangulation_on_sphere_2.zip is still missing
Besides the issue of the missing file (but this is addressed in https://github.com/CGAL/cgal/issues/6744) maybe also good to have the extra link for the 5.6 version (analogous to https://github.com/CGAL/cgal/issues/6503#issuecomment-1105018816).
maybe also good to have the extra link for the 5.6 version (analogous to #6503 (comment)).
I have pushed https://github.com/CGAL/cgal-web/commit/d7463ee7d754f99fb6caaa0910d679537e55d5c0, to add redirections for demos of CGAL 5.6 and 5.7.
The 5.4. version is not maintained any further, should we close this issue?
There was a file demos-CGAL-5.4.5-I-214_Christo-test220720230020-MSVC-2022-Community-Release-cmake.tar.gz on our server. It was generated July 22th (this year). I used it to upload the precompiled demos.
This issue is actually fixed, now.